Miner&#39;s lamp



A. COYNE AND L. HASH.

MINER"S LAMP.

APPLICATloN FILED APR. 19. 1911.

1 ,844,867 Patented June 29, 1920.

nl :zf Y@ UNITED STATES PATENT OFFICE.

ANTHONY COYNE AND LEE HASH, OF FORK RIDGE, TENNESSEE.

MINERS LAMP.

Specification of Letters Patent. Patented Jung 29, 1920.

Application filed April 19. 1917. Serial No. 163.149.

To all whom t may concer/a.'

Be it known that vwe, ANTHONY CoYNn f, and LEE HASH, citizens oi theUnited btates,

' residing at Fork Ridge, in the county of Claiborne and State ol'Tennessee, have invented certain new and useful Improve ments in MinersLamps; and we do hereby declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin. the art to which it appertains to make and use the same.

This invention relates to a new and improved lamp and more particularlyto a lamp to be used by miners and the like when working in mines,tunnels, sewers and like dark places where the operators are required towear lights upon their hats or caps.

One of the aims of this invention is to provide a lamp provided withmeans for generating a from carbid and water and provided with dualgenerating cham bers and means so as to render the lamp capable of beinginverted or reversed so that when one of the chambers has becomeexhausted the other may be employed so that there is provided acontinuous light and the miner or other workman will not be required tobe in the dark when refilling the depleted chamber at any time beforethe chamber then in use has become exhausted.

Another aim of thisinvention is to provide means for establishingintercommunication between the generating chambers so that any excessgas will pass from one chamber to the other so as to equalize thepressure within the lamp and to also avoid any Waste of' the gas so thatthe gas can be subsequently utilized.

AAnother aim of this invention is to provide means for causing the waterto be dripped upon the carbid drop by drop and which means is alsoadapted to be actuated in a manner for cleaning the water conduit shouldthe same become clogged or fouled trom any cause, and to also providemeans for the ready removal lof the generating chambers for eil'ectuallycleaning the same of the slake carbid, and to also construct all of theconduits, such as gas pipes and the like, in a manner that the same willbe incased within the lamp so that the same will not be exposed at theexterior of the lamp and subjected to the danger of being broken orotherwise injured by the lamp coming` into contact with surroundingobstructions and objects.

These and other objects and advantages will more fully appear as thenature of the invention is more clearly understood from theconstruction, combination and arrangement of the parts thereof as rfullydescribed in the following specification, delined in the subject matteroi the claim, and illustrated in the views in the accompanying drawings,in which,

Figure 1 is a vertical sectional view, on line 1-1 of liig. 2, showingcertain ofi the detail construction of the lamp.

Fig. 2 is a detail vertical sectional view, on line 22 of Fig. 1,showing a further detail construction of the lamp.

Referring to the drawings, wherein similar reference characters denotecorresponding parts throughout the several views, 1 indicates one of thecarbid chambers and 2 the other carbid chamber. These kcarbid chambersare open ended and are provided with exterior threads adjacent theiropen ends for threadingly engaging the respective internally threadedflange 3 and the internally threaded liange 4 upon the respective endsof the Water tank or reservoir 5, whereby the carbid chambers 1 and 2are oppositely disposed to each other with their open ends facing eachother and the water tank or reservoir 5 interposed therebetween. j

Extending substantially centrally through the reservoir o and having itsends projecting for a distance beyond the side walls 6 and 7 of thereservoir 5 and into the re spective carbid chambers 1 and 2 is thewater conduit pipe 8 provided with the spaced valve bodies 9 and 10 forestablishing a communication between the interior of the reservoir 5 andthe water conduit pipe S, the passages through the valve bodies 9 and 10being respectively controlled by the valves 11 and 12 provided with thevalve stems 13 and 14 formed with the threaded portions 15 and 16 `whichare threaded through `the internally threaded bosses 17 and 18 upon oneportion of the side wall of the reservoir 5, the projecting ends of thevalve stems 13 and 14 being provided with the angularly disposedoperating handles 19 and 20, and diametrically opposite 21 through whichthe water is poured i'oi' filling the reservoir the nipple 21 having pthreaded thereon the closure or cap In order to admit air into thereservoir when the water therein is being used tor the generation ofgas, the aii pipe 23 is provided and is positioned and secured upon theinner side of the side wall ot the reservoir 5 at a point substantiallymidway between the bosses 17 and 18 and the filling nipple 21 and isopen ended and extends from a point in proximity to the end wall (3 ofthe reservoir 5 to a point in proximity to the end wall 7 of thereservoir 5, but :it this point the end of the pipe is bent to providethe elbow 241i-, the end of which pros jects through the side wall otthe reservoir 5 thereby establishingcommunication between the interiorof the reservoir 5 and the outside atmosphere.

Extending through the reservoir 5 at one side of and preferably parallelwith the rater pipe 8 is the gas conducting pipe 25 having its endssuitably secured in the respective end walls G and 7 of the reservoir 5and thereby establishing communication between the interior of thecarbid chamber 1 and the interior of the carbid chamber 2, andintersecting and having connnunication with the gas conducting pipe isthe later` ally extending burner pipe 2G projecting through the sidewall of the reservoir 5 at a point substantially diametrically oppositethe air pipe 25 and provided upon its pro` j ecting end with the burner27 and suitably secured upon the projecting end ot the burner pipe 26 atthe outer side of the, side wall of the reservoir 5 is the reflector 2Ssurrounding the burner 2T and for reflecting the rays of' light from theburner 2T.

In order to cause the water from the reservoir 5 which is conductedthrough the water pipe 8 into the respective carbid chambers 1 and 2 tobe deposited upon the carbid within the chambers 1 and 2 drop by dropthere is projected through the water pipe 8 the rod 29 of a diametersuiiicient to almost lill the opening through the pipe 8, but notsuiliciently so to prevent the water jfrom passing through the pipe S tothe chambers 1 and 2 in sufficient quantities for accomplishing the dropby drop result desired, and should the water pipe 8 become ionled orclogged from any cause, the ends ot the rod 29 which project outwardlyof the ends of the water pipe 8 are provided with the laterallyprojecting curved ends and 31 whereby the rod 29 may be rotated withinthe rater pipe 8 for cleaning the same and also reciprocated in a mannerfor removing the fouling or clogging material.

For eiiiciently attaching the lamp to the hat or cap ot the workmanthere is provided upon the outer side of the side wall of the reservoir5 and at a point substantially diametrically opposite the burner 27 thesleeve 32 having revolubly mounted therein the rod 33 having formed uponits opposite ends the sharp pointed hooks 34C and 35, the pointed endso' which are directed inwardly toward each other but are disposed inplanes substantially at right angles to each other, so that either thehook 34 may be swung outwardly for inserting in the hat or cap oftheworkman when the lamp is in one position, or the hook 35 may be swungoutwardly for inserting the same in the hat or cap of the workman whenthe lamp has been placed in its inverted or reverse position, and ineither instance the hook 34 or the hook 35, when the other is beingemployed, will lie flat against the outer surface of the wall of thereservoir 5. To prevent the lamp from swinging back and forth in alateral direction when the same has been secured upon the hat or cap ofthe workman there is secured upon the sleeve 32 the transverse bar $36which. is preferably provided with angular pointed ends for stickinginto the leather or other band of the hat or cap of the workman.

rllhe operation and advantages of the device will be briefly describedas follows: Assuming the lamp to be secured upon the hat or cap of theworkman in the position shown in Figs.1 and 2 with the carbid contained1n the chambers 1 and 2 and the requisite quantity of water within thereservoir 5, the handle 20 of the valve stem 14 is now rotated foropening the valve 12 whereby water will pass through the valve body 10into the water pipe 8 and be dripped upon the carbid within the chamber2 caused by the water trickling along the rod 29 and dropping off thecurved end 31, whereby gas will be generated within the chamber 2 andpass upwardly through the gas conducting pipe 25, through the burnerpipe 26 and to the burner 27 which is now lighted, and should there beany excess of gas in the chamber 2, the excess gas will pass onwardlythrough the gas conducting pipe 25 into the chamber 1, to besubsequently utilized as the same flows backwardly through the upperportion ot the pipe 25 to the burner 2T when the pressure has becomesomewhat diminished in the chamber 2 after the gaseous products 'of thecarbid within the chamber 2 have been exhausted and before the lightbecomes dim. The lamp is removed from the hat or ca p of the workman bydetaching the hook 3st therefrom and inverting the position of the lamp,the valve 12 being closed and the valve 11 opened by rotating its stem13 through the mediuml ot the handle 19, whereby the water from thereservoir 5 will now pass through the valve body 9 into the vater pipe 8and trickle down the rod 29 and drop from its curved end 30 upon thecarbid in the chamber l, so that gas is now generated in the chamber 1and passes outwardly through the gas pipe 25, the burner pipe 26 to theburner 27 for replenishing and supplying` the flame of the burner 27.However, should there be any excess gas in the chamber l the same willpass through the conducting pipe 25 into th`e chamber 2. The lamp cannow be used for double the length of time that an ordinary lamp can beused and there is practically two lamps in one in this invention, and bycausing the carbid chambers l and 2 to be in communr cation the pressurein the lamp is sufficiently equalized and the danger of explosionreduced to a minimum. Furthermore, the chambers l and 2 are readilyremovable from the ends of the reservoir 5 and due to their shape, whichis preferably semicircular, the same can be readily cleaned of theslaked carbid and readily replenished with new carbid.

lVhile there is shown and described only the use of one burner 27 andits connecting pipe 26, the lamp may be supplied with two or more suchburners and pipes by duplr eating the burners and connecting the same tothe main gas conducting pipe 25.

Having described our invention, what We claim as new and desire tosecure by Letters Patent, is

An acetylene lamp comprising a Water reservoir having opposite walls, apair of opposite carbid chambers detachably secured to said walls, atube connecting said walls and establishing communication between saidchambers, a burner tube leading from said tube to the exterior, a Waterfeed pipe connecting said walls, and having openings near its oppositeends adjacent to said walls communicating with the Water reservoir,valves for said openings having operating means extending to theexterior of the water reservoir, and an air vent for the water reservoirextending close to said walls communicating at one end with theatmosphere near one of said walls and opening at its other end into thewater reservoir near the other wall.

In testimony whereof we have signed our names to this specification inthe presence of two subscribing Witnesses.

ANTHONY COYNE. LEE HASH.

J. W. SMITH.

